85		Downward (Windows, 2016)
74		Banana Town (Windows, 2017)
74		Conan: Exiles (Windows, 2017)
74		Savage Lands (Windows, 2015)
73		Miscreated (Windows, 2014)
73		SAS (Windows, 2018)
67		Dishonored 2 (Windows, 2016)
65		Adventures of Hooi (Windows, 2016)
65		Crypt of the Serpent King (Windows, 2016)
64		Project Warlock (Windows, 2018)
64		Agents of Mayhem (Windows, 2017)
64		Digger Online (Windows, 2015)
64		Megaton Rainfall (Windows, 2017)
64		Purgatory: War of the Damned (Windows, 2015)
63		Darksiders III (Windows, 2018)
63		Strange Brigade (Windows, 2018)
63		Lichdom: Battlemage (Windows, 2014)
62		Hexen II (Windows, 1997)
62		The Elder Scrolls Adventures: Redguard (Windows, 1998)
62		Overlord (Windows, 2007)
61		Overlord II (Windows, 2009)
60		Archangel (Windows, 2002)
57		Shadow Warrior 2 (Windows, 2016)
55		Sunset Rangers (Windows, 2016)
55		Radiation Island (Windows, 2016)
55		Osiris: New Dawn (Windows, 2016)
55		Unturned (Windows, 2017)
55		Shadows Peak (Windows, 2016)
55		Black Ice (Windows, 2014)
54		Empyrion: Galactic Survival (Windows, 2015)
54		Creativerse (Windows, 2017)
54		Looterkings (Windows, 2017)
54		Minecraft (Windows, 2010)
54		Genesis Online (Windows, 2015)
54		Revulsion (Windows, 2017)
54		Minecraft (Windows, 2017)
53		VentureVerse: Legend of Ulora (Windows, 2018)
53		Burden (Windows, 2018)
53		Goat Simulator (Windows, 2014)
45		Sky Break (Windows, 2016)
45		Niffelheim (Windows, 2016)
45		CHKN (Windows, 2016)
44		Out of Reach (Windows, 2015)
44		Reign of Kings (Windows, 2015)
44		Kynseed (Windows, 2018)
44		GRAV (Windows, 2015)
44		Die Young (Windows, 2017)
44		Astral Terra (Windows, 2015)
44		Crossout: Craft Ride Destroy (Windows, 2017)
44		The League of Lonely Geologists (Windows, 2017)
43		The Long Dark (Windows, 2014)
43		Dying Light: Bad Blood (Windows, 2018)
42		7 Days to Die (Windows, 2013)
40		Hillsfar (DOS, 1989)
40		UnEpic (Windows, 2011)

Notes: Games similar to Portal Knights, Games like Portal Knights, keen games GmbH & Co. KG, 505 Games S.R.L., Windows, Action, Fantasy, RPG elements, Sandbox, Open World, 1st-person, Behind view, PC, Game Similarities.